Sash-fastener



l y (No Model.)

' E. B. ATTWELL.

SASH FASTENBR.

110,260,271. Patented June 27, 11882.

Vr` A A 2 y WIT/ VESSES By Ins Attorney v v n. Pines, munmvwnfr. wminpm uc.

UNITED STATES PATBLTAQEBlQE.

EwnLL n. ATTWELL, on LEEsBURe, VIRGI'N SASH-FASTENER.

SPEGIFICATION` forming part of Letters Patent No. 260,271, dated June 27, 1882.

Application ined May 16, rss2. (No model.)

To all whom it 'may concern Be it known that I, EWELL B. ATTWELL, a citizen of the United States, residing at Leesburg, Loudoun county, Virginia, have invented a new and useful Improvement in Sash- Fasteners, of which the following is a specification.

This invention relates primarily to a certain class of sash-fasteners which provide for separately locking and unlocking the upper and lower sashes of an ordinary house-Window, so that each may be fastened at different heights, a single key or finger-lever being used in connect-ion with a pair of sprin g-projected dogs, which are pivoted by means of the key-shaft within one of the uprights ofthe window-frame at mid-height.

Heretofore sash-fasteners of this description, so far as I am informed, have lacked the security of a practically-removable key, (common in someotherforms of sashfasteners,) by which I mean a key which can be withdrawn at will to render the locked fastener inaccessible, and as readily replaced. The displacement of the dogs by their springs and by the weight of the sashes when the key-shaft is withdrawn has tended to make this seem impracticable.

The principal object of the present invention is to provide for readily removing and replacing the key at will in a sash-fastener of said description, which I accomplish by providing the dogs with supplemental pivots working in slots in metallic housings, whereby they are securely held in place independently of the key-shaft.

Another object of this invention is to prevent the accidental retraction of either of the fastener-dogs, so as to insure the control of an elevated sash by the hand of the operator before it is unfastened. This I accomplish .by providing the holes in the sash-edges with metallic bushings cut away at top to form detents, the head of each dog being hanged to coact therewith.

Figure 1 of the accompanying drawings is an inner face view of a window-frame upright provided with my improved sash-fastener. Fig. 2 is avertical section on the line 22, Fig. 1. Fig. 3 is a backfview, and Fig. 4 an end view, of the key removed. Fig. 5 is a side view, and Fig. 6 an end view, of one of the fasteners; and Fig. 7 is a perspective view of one of the sash-hole bushings.

Like letters of reference indicate corresponding parts in the several figures.

A represents the left-hand upright of an ordinary house-window frame, and B G respectively lower and upper sashes sliding therein.

F F represent a pair of my individual sashfasteners, of one and the same pattern, andK a removable key, of a preferred shape, for uulocking both separately. Said key K, Figs. 1- 4, is constructed with a pair of thumb-rests, e z, corresponding with the respective fasteners and with a continuous longitudinal spline, y, on the back of its cylindrical shaft.

Each individual sash-fastener F, Figs. 1, 2, 5, and 6, is composed of a fastener-dog, d, and a metallic housing, h, with the spring s of the former. Near one end the body of the fastener-dog d is provided with an orifice, o, Fig. 2, loosely fitted to the shaft of the key K,which, when inserted, constitutes the main pivot of said dog. The housing h has corresponding orifices a' in both sides. A pair of supplemental pivots, p, preferably cast on the fastener-dogare located adjacent to said orifice o, and occupy curved slots w in the lateral sides or cheeks of the housing, which coact therewith to preserve the normal position of the fastener-dog when the key K is withdrawn, while permitting the fastener-dog to be moved freely by its spring and the key. To admit the fastener-dog provided with said supplemental pivots, one side of the housing is made removable, as shown in Fig. 5, solid supports .for its ends being provided so as to prevent its displacement by the weight of a supported sash. It is securely held in place by the contiguous wall of the mortise in the Windowframe upright A, in which the housing is embedded.

lhe spring s, which is preferably a long piece of hoopskirt steel, is attached at one end within a slit in what may be termed the frcnt7 ofthe fastener-dog, and is carriedaround the pivot end to bear on the back of the housing behind the dog, its attached end being thus relieved from transverse breaking strains.

The pivots of the fastener-dog d are located at one of its ends as aforesaid. Its head is lomal position from the face of thc housing h, als shown in the several views, and is constructed with :t flange, c, to cenet With nrecess in the top of :t tubular bushing, u, Figs. 2 and 7, within the coacting socket-hole in the edge of the sash B or G. rlhe gravitation ofthe sash causes said iinnge to enter said recess, and the fastener-dog is then locked against retraction by the key, which prevents accidentally retracting either fastener-dog of n pair in use, ns it is necessary for theoperntor to slightly raise the sash which is to be untastened in crder to unlock it. The edge of each sash may be provided with any preferred number und arrangement of bnshed socket-holes.

The housing h is constructed of the external shape represented, with parallel inclined ends cf, and with n face-extension, g, containing n conntersunkl screw-hole at one extremity to provide for securing the saine within n inortise 0f corresponding shape, easilycut in the Window-frame upright A, by Ineens ot' n single screw, as shown in Figs. l and 2, the housing end opposite the screw forming e half dovetail, which, in the upperfestcner of n pair, is at its lower end, and precludes loosening by the Weight ofthe constantly-supported upper sash.

Besides the pair of mortiscs to receive the two individual sash-fasteners, said windowframc upright is simply provided with an auger-hole, which may be furnished with n metallic bushing nt its outer end to receive the removable key K. i

Haring thus described my said invention, I claim- 1. Thecoinbinntion, as herein set forth, ot'nJ pair of individual sash-fasteners, F F, and n removable key, K, each of said individual sashfasteners comprising a spring-projected festenerdog, (I, having an orifice, o, to receive and conct with the shaft of said key, and supplemental pivots inwerking in slots w in a, metallic housing to support theindivdual fastenerdogs independently of suid key, substantially as specified.

2. In n sash-fastener of the class herein set forth, the combination, with a pair of springprojected iiistener-dogs having flanged heads, of recessed` tubular bushings u, within the socketholes in the edges oi" the respective sashes, to prevent accidentally nntastening either sash7 as herein specilied.

EWELL B. ATTWELL.

Witnesses:

HENRY A. LAMB, J No. L. EWIN, 

